A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6685-01-582-8551
NSN 6105-01-044-0189
NSN 5950-01-607-2020
NSN 6650-01-163-1849
NSN 5965-01-105-4194
NSN 5999-01-609-8691
NSN 6650-01-160-1110
NSN 5835-00-233-6327
NSN 5915-01-519-3287
NSN 5905-00-349-3075
NSN 6610-01-283-6739
NSN 5945-00-575-6890